|Publication number||US6638237 B1|
|Application number||US 09/630,385|
|Publication date||Oct 28, 2003|
|Filing date||Aug 1, 2000|
|Priority date||Aug 4, 1999|
|Also published as||CA2378589A1, EP1206224A2, US6964652, US20040106931, US20050288685, WO2001010341A2, WO2001010341A3|
|Publication number||09630385, 630385, US 6638237 B1, US 6638237B1, US-B1-6638237, US6638237 B1, US6638237B1|
|Inventors||Marvin Guiles, Gerald Melsky|
|Original Assignee||Percardia, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (193), Non-Patent Citations (14), Referenced by (22), Classifications (15), Legal Events (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application claims the benefits of U.S. Provisional Application No. 60/147,211, filed Aug. 4, 1999.
The present invention relates to an apparatus for bypassing a blocked or stenosed blood vessel segment, and, more particularly, to an apparatus and method for delivering a conduit between the coronary artery and the left ventricle of the heart.
Coronary artery disease is a major problem in the U.S. and throughout the world. Coronary arteries as well as other blood vessels frequently become clogged with plaque which, at the very least, can reduce blood and oxygen flow to the heart muscle (myocardium), and may impair the efficiency of the heart's pumping action, and can lead to heart attack (myocardial infarction) and death. In some cases, these coronary arteries can be unblocked through non-invasive techniques such as balloon angioplasty. In more difficult cases, a surgical bypass of the blocked vessel is necessary.
In a coronary bypass operation, one or more venous segments are inserted between the aorta and the coronary artery, or, alternatively, the distal end of an internal mammary artery is anastomosed to the coronary artery at a site distal to the stenosis or occlusion. The inserted venous segments or transplants act as a bypass of the blocked portion of the coronary artery and thus provide for a free or unobstructed flow of blood to the heart. More than 500,000 bypass procedures are performed in the U.S. every year.
Such coronary artery bypass graft (CABG) surgery, however, is a very intrusive procedure which is expensive, time-consuming, and traumatic to the patient. The operation requires an incision through the patient's sternum (sternotomy), and that the patient be placed on a heart-lung bypass pump so that the heart can be operated on while not beating. A saphenous vein graft is harvested from the patient's leg, another highly invasive procedure, and a delicate surgical procedure is required to piece the bypass graft to the coronary artery (anastpmosis). Hospital stays subsequent to the surgery and convalescence are prolonged. Furthermore, many patients are poor surgical candidates due to other concomitant illnesses.
As mentioned above, another conventional treatment is percutaneous transluminal coronary angioplasty (PTCA) or other types of angioplasty. However, such vascular treatments are not always indicated due to the type or location of the blockage or stenosis, or due to the risk of emboli.
Thus, there is a need for an improved coronary bypass system which is less traumatic to the patient.
Briefly stated, the methods and apparatus described and illustrated herein generally relate to direct coronary revascularization, wherein a conduit or opening is provided from the left ventricle to the coronary artery, often times the left anterior descending (LAD), to provide blood flow directly therethrough. These methods and apparatus are particularly useful when a blockage partially or completely obstructs the coronary artery, in which case the bypass conduit or opening is positioned distal to the blockage. More preferably, conduits are provided to direct blood flow from the left ventricle to a coronary artery at a location distal to a blockage in the coronary artery. The conduits may be threaded to facilitate insertion into a patient's heart wall and to control the depth of insertion. Threaded and nonthreaded conduits are preferably delivered using a guidewire approach. In this approach, the guidewire is placed through a needle that is inserted into the left ventricle. After the guidewire is placed, the needle is removed. In one embodiment, a dilator is provided over the guidewire into the heart wall, and the conduit is delivered over the dilator. In another embodiment, an introducer sleeve is provided over the dilator into the heart wall, the dilator is removed, and the conduit is delivered through the introducer sleeve. A depth measuring tool is preferably used to determine the appropriate length of the conduit prior to delivery. In another embodiment, a feature can be included on the end of the introducer sleeve that engages with the arterial wall, and when pulled back, distends the artery. The conduit can then be advanced until the deployable flanges seat against the bottom of the artery.
FIG. 1 is a schematic side view of a threaded conduit inserted into a heart wall of a patient between the left ventricle and a coronary artery according to a preferred embodiment of the present invention.
FIG. 2 is a side view of a heart having a needle inserted through a coronary artery to the left ventricle, and a guidewire inserted therethrough.
FIG. 2A is a side view showing a needle being inserted through a coronary artery into the left ventricle.
FIG. 2B is a side view of a guidewire inserted through the needle of FIG. 2A, with the needle being removed.
FIG. 3 is a side view of a dilator being inserted over the guidewire of FIG. 2.
FIG. 3A is a side view of an introducer being advanced over the guidewire of FIG. 2B.
FIG. 4 is a side view of a threaded conduit being inserted over the dilator of FIG. 3.
FIG. 4A is a side view of a tool being used to insert a threaded conduit inserted over the dilator of FIG. 3A.
FIG. 5 is a side view showing the threaded conduit of FIG. 4 being advanced into position.
FIGS. 5A-5D are the side views of FIGS. 2A, 2B, 3A and 4A, more particularly showing features included on the needle, introducer and deployment tool that aid in determining the proper deployment depth.
FIG. 6 is a side view of a sleeve being placed for shunt insertion.
FIG. 7A is a side view of a conduit being inserted through the sleeve of FIG. 6 using a stylet.
FIG. 7B illustrates the conduit of FIG. 7A having flanges.
FIG. 8 is a side view of the stylet and sleeve of FIG. 7A being removed.
FIGS. 8A-8C are side views of a delivery system for a nonthreaded conduit illustrating a bulb feature on the outer introducer sleeve that aids in holding the artery open and achieving proper placement of the device.
FIG. 9 is a schematic side view of a two piece threaded stylet and sleeve.
FIG. 10 is a schematic side view of a depth measuring tool.
FIG. 11 is a cross-sectional view of an introducer sleeve having a side lumen for depth measurement.
FIGS. 12A-12D are schematic side views of the delivery of a conduit from the coronary artery to the left ventricle using a dilator and introducer.
FIGS. 13A-13B are schematic side views of threads used to hold open the coronary artery.
FIG. 14 is a table of the pull out forces of various threaded conduits that may be used according to certain embodiments of the present invention.
FIG. 15 is a table of pull out forces of various barbed conduits that may be used according to certain embodiments of the present invention.
FIG. 16 is a table of push-through forces of various conduits having flanges that may be used according to certain embodiments of the present invention.
As is well known, the coronary artery branches off the aorta and is positioned along the external surface of the heart wall. Oxygenated blood that has returned from the lungs to the heart then flows from the heart to the aorta. Some blood in the aorta flows into the coronary arteries, and the remainder of blood in the aorta flows on to the rest of the body. The coronary arteries are the primary blood supply to the heart muscle and are thus critical to life. In some individuals, atherosclerotic plaque, aggregated platelets, and/or thrombi build up within the coronary artery, blocking the free flow of blood and causing complications ranging from mild angina to heart attack and death. The presence of coronary vasospasm, also known as “variant angina” or “Prinzmetal's angina,” compounds this problem in many patients.
The principles of the present invention are not limited to left ventricular conduits, and include conduits for communicating bodily fluids from any space within a patient to another space within a patient, including any mammal. Furthermore, such fluid communication through the conduits is not limited to any particular direction of flow and can be antegrade or retrograde with respect to the normal flow of fluid. Moreover, the conduits may communicate between a bodily space and a vessel or from one vessel to another vessel (such as an artery to a vein or vice versa). Moreover, the conduits can reside in a single bodily space so as to communicate fluids from one portion of the space to another. For example, the conduits can be used to achieve a bypass within a single vessel, such as communicating blood from a proximal portion of an occluded coronary artery to a more distal portion of that same coronary artery.
In addition, the conduits and related methods can preferably traverse various intermediate destinations and are not limited to any particular flow sequence. For example, in one preferred embodiment of the present invention, the conduit communicates from the left ventricle, through the myocardium, into the pericardial space, and then into the coronary artery. However, other preferred embodiments are disclosed, including direct transmyocardial communication from a left ventricle, through the myocardium and into the coronary artery. Thus, as emphasized above, the term “transmyocardial” should not be narrowly construed in connection with the preferred fluid communication conduits, and other non-myocardial and even non-cardiac fluid communication are preferred as well. With respect to the walls of the heart (and more specifically the term “heart wall”), the preferred conduits and related methods are capable of fluid communication through all such walls including, without limitation, the pericardium, epicardium, myocardium, endocardium, septum, etc.
The bypass which is achieved with certain preferred embodiments and related methods is not limited to a complete bypass of bodily fluid flow, but can also include a partial bypass which advantageously supplements the normal bodily blood flow. Moreover, the occlusions which are bypassed may be of a partial or complete nature, and therefore the terminology “bypass” or “occlusion” should not be construed to be limited to a complete bypass or a complete occlusion but can include partial bypass and partial occlusion as described.
The preferred conduits and related methods disclosed herein can also provide complete passages or partial passages through bodily tissues. In this regard, the conduits can comprise stents, shunts, or the like, and therefore provide a passageway or opening for bodily fluid such as blood. Moreover, the conduits are not necessarily stented or lined with a device but can comprise mere tunnels or openings formed in the tissues of the patient.
The conduits of the present invention preferably comprise both integral or one-piece conduits as well as plural sections joined together to form a continuous conduit. The present conduits can be deployed in a variety of methods consistent with sound medical practice including vascular or surgical deliveries, including minimally invasive techniques. For example, various preferred embodiments of delivery rods and associated methods may be used. In one embodiment, the delivery rod is solid and trocar-like. It may be rigid or semi-rigid and capable of penetrating the tissues of the patient and thereby form the conduit, in whole or in part, for purposes of fluid communication. In other preferred embodiments, the delivery rods may be hollow so as to form the conduits themselves (e.g., the conduits are preferably self-implanting or self-inserting) or have a conduit mounted thereon (e.g., the delivery rod is preferably withdrawn leaving the conduit installed). Thus, the preferred conduit device and method for installation is preferably determined by appropriate patient indications in accordance with sound medical practices.
FIG. 1 illustrates schematically a threaded conduit according to one preferred embodiment of the present invention. The conduit 10 is preferably an elongate tubular body having a proximal end 12 and a distal end 14 and a lumen (not shown) extending therethrough. The proximal end 12 preferably tapers to the desired internal diameter (ID) of the device. The majority of the conduit 10 is threaded with threads 16 to facilitate insertion of the conduit into the heart, as described below. In one preferred embodiment, the entire body of the conduit 10 is threaded except for the proximal tip 12 of the conduit. The conduit may or may not have flange-like features 13 on its distal end that engage with the artery lumen. In addition, the conduit may or may not have a ring 15 for engaging the artery and allowing blood to pass therethrough. FIG. 1 illustrates the conduit 10 as implanted in a patient, wherein the conduit preferably extends between the left ventricle LV, through the myocardium MYO and into the coronary artery CA.
FIGS. 2-5 illustrate one embodiment for delivering the conduit 10 into a patient. Although these figures illustrate a pig heart, it will be appreciated that the methods described herein apply to human hearts as well. To deliver the conduit 10 into the myocardium of the heart PH, a needle 18, as shown in FIG. 2, is first inserted through the heart wall into the left ventricle (also illustrated in FIG. 2A). The needle 18 is preferably hollow, and is preferably inserted through an anterior wall and then a posterior wall of the coronary artery CA. After the needle is inserted, access to the left ventricle may be verified. If it is necessary to relocate the needle, the needle leaves only a very small hole upon removal.
As shown in FIG. 2, after the needle is placed in the left ventricle, a guidewire 20 is inserted into the lumen in the needle. The guidewire is preferably a 0.014 guidewire, which extends into the left ventricle through the needle. After placement of the guidewire the needle is removed, as illustrated in FIG. 2B.
As shown in FIGS. 3 and 3A, a dilator or introducer 22 is preferably inserted over the guidewire and into the heart until the dilator reaches the left ventricle. Upon reaching this position, the guidewire 20 is removed from the heart.
As shown in FIGS. 4 and 4A, a threaded conduit 10, such as described with respect to FIG. 1 above, is placed over the dilator. The non-threaded tapered tip 12 (shown in FIG. 1) of the conduit is inserted into the coronary artery. The conduit 10 is then preferably pulled back to open the artery. The first few threads are then advanced by twisting the threaded conduit. The conduit 10 may be in the form of a shunt.
A tool 24 is then used to advance the conduit 10 to the proper depth, as shown in FIGS. 5 and 4A. More preferably, the tool 24 mates with the distal end of the conduit in order to turn the conduit. Because the conduit 10 is threaded, the tool 24 can easily adjust the conduit to a desired depth. After the conduit 10 reaches the desired depth, the tool and the dilator are removed, leaving the conduit 10 in place.
In FIGS. 5A-5D, features are shown on the components of the delivery system illustrated in FIGS. 2A, 2B, 3A and 4A to help determine the proper depth to insert the device. As shown in FIG. 5A, depth markers 19 on the needle 18 can be used to determine the thickness of the myocardium, and ensure that the device used will reach the left ventricle. As shown in FIGS. 5C and 5D, a bleed hole 23 in the dilator/introducer 22 can be used to determine the location of the lumen of the artery, and a depth marker 25 on the dilator/introducer, coupled with a window 27 in the deployment tool 24, can be used to determine when the threaded device 10 has been inserted to the proper depth.
FIGS. 6-8 illustrate another embodiment for delivering a conduit into a patient's heart, where the conduit need not be threaded. As described and shown with respect to FIGS. 2 and 3 above, a dilator is preferably placed into the heart through the coronary artery using a needle and a guidewire. As shown in FIG. 6, a sleeve 26 is placed over the dilator and inserted into the patient's heart. The dilator is then removed.
As shown in FIG. 7A, a conduit 10 is inserted into the sleeve 26. The conduit may be in the form of a shunt, as illustrated in FIG. 7A. The conduit, as shown in FIG. 7B, may have flanges 28 on its distal end 14 which will assist in anchoring the conduit 10 to the artery. The conduit 10 is placed in the sleeve 26 by collapsing the flanges 28 into the sleeve. The conduit is advanced using a stepped stylet 30, as shown in FIG. 8, to the proper depth. This depth may be determined using an external depth measuring gauge. Holding the stylet 30 stationary, the sleeve is removed, releasing the flanges 28, preferably in the artery CA. Then the stylet is removed, leaving the conduit 10 in place.
In FIGS. 8A-8C, another embodiment for inserting a non-threaded conduit is shown, wherein a bulbous feature is included on a sleeve for holding the artery open.
In this embodiment, the dilator 22, conduit 10, and sleeve 26 are assembled as shown, and inserted through the coronary artery and into the myocardium until the bulbous feature 29 is inside the lumen of the artery. The assembly is then pulled back, so that the bulbous feature 29 distends the artery. The stepped dilator 22 is then pushed into the left ventricle, advancing the conduit 10 while the sleeve 26 is held in place. The flanges 28 then deploy outside the sleeve, but inside the artery. The conduit can be advanced until the flanges bottom out on the bottom wall of the artery, then the sleeve 26 and dilator 22 can be removed. Several configurations of bulbous features can be incorporated, including a short threaded section, a balloon, or any deployable features that extend past the outer diameter (OD) of the sleeve thereby anchoring the sleeve in the lumen of the artery. It is also understood that the dilator, conduit, and sleeve can be inserted as an assembly, or individually in which case the conduit is backloaded into the sleeve after the sleeve has been placed.
It will be appreciated that various conduit configurations can be used in accordance with the embodiments of the present invention. For instance, threaded conduits, conduits with barbs and conduits with flanges may all be used. FIG. 14 shows a table of the pull out forces of various threaded conduits that may be used. FIG. 15 shows a table of the pull out forces of various barbed conduits that may be used. FIG. 16 shows a table of the push-through forces of various conduits having flanges that may be used.
FIG. 9 illustrates a two piece threaded stylet and sleeve for delivery of a conduit. The stylet 54 is preferably threaded only on its distal tip 56 which is to be inserted into the myocardium MYO to the left ventricle. The sleeve 58 is preferably threaded over its entire body. The stylet 54 and the sleeve 58 are preferably threaded simultaneously into the myocardium. The stylet is then removed, and a conduit (not shown) for providing blood flow between the left ventricle and coronary artery is inserted through the sleeve while the threads on the sleeve hold the artery open. After insertion of the conduit the sleeve is removed. Alternatively, the threaded sleeve can function as the conduit itself.
In another embodiment, not shown, a method is provided for insertion of a curved conduit. This embodiment is useful where it is desired to provide a curved conduit between the left ventricle and coronary artery. A curved stylet is preferably inserted into the heart wall from the coronary artery to the left ventricle. A nonthreaded conduit is advanced over the curved stylet using a threaded flexible tool placed over the conduit. The threaded flexible tool is preferably attached to the conduit in order to advance the conduit over the stylet. The conduit is inserted by turning the tool until the conduit is in its desired location. In this embodiment, the conduit can be rigid or flexible.
FIG. 10 illustrates a depth measuring tool 72 for measuring the depth of the coronary artery and/or myocardium. In one embodiment, the tool 72 has a proximal end 74 with an access port 78 in fluid communication with an opening 80 on the distal end 76. Also on the distal end are markers 82 used to measure the depth of insertion of the access port 78. The proximal end is preferably tapered, and is inserted into the myocardium to the left ventricle. When the access port reaches the left ventricle, blood flows through the port and out the opening. At this point the depth of the myocardium can be determined with the markers 82. A bypass conduit 84 can then be inserted over the tool, the conduit having a length determined based on the depth d of the myocardium measured by the tool 72.
In another embodiment shown in FIG. 11, a depth measuring tool may be implemented within an introducer sleeve 26 such as described above. In this embodiment, the sleeve 26 has a main lumen 32 for introduction of the conduit as described above, and also has a secondary lumen 34 in fluid communication with an access port 36 for measuring the depth of insertion of the introducer sleeve. For instance, when the sleeve 26 is inserted through the heart wall toward the left ventricle, when the sleeve reaches the left ventricle blood flows through the access port and out an opening 38 on the opposite end. Once this location is reached, markers provided on the outside of the sleeve, as described with respect to FIG. 10, are used to determine the desired size of the conduit to be inserted through the lumen 32. It will be appreciated that the depth measuring tools described above may be calibrated so that the access port is located in the coronary artery to indicate positioning therein.
FIGS. 12A-12D illustrate the delivery of a conduit 86 using a dilator and an introducer according to another embodiment of the present invention. As shown in FIG. 12A, a template 88 is placed on the outside of the heart for positioning and a needle 90 is inserted therethrough into the coronary artery, through the myocardium and into the left ventricle. The needle 90 is hollow, and a guidewire 92 is inserted through the needle to the left ventricle, as shown in FIG. 12B. A dilator 94 is loaded onto the guidewire into the myocardium, as shown in FIG. 12C. An introducer sheath 96 is advanced over the dilator until the end of the sheath is in the artery lumen. The artery is opened, and the dilator 94 is removed. As shown in FIG. 12D, the conduit 86 is advanced through the introducer sheath, with a pusher or stylet 98 to advance the conduit into the myocardium.
In another embodiment, shown in FIGS. 13A and 13B, coarse threads are used on a device or a tool to hold open the artery. As shown in FIG. 13A, threads 100 which are exemplarily shown are used to penetrate the outer wall of the coronary artery. These threads may be independent as shown, or may be part of a conduit or delivery tool or other member. After the threads penetrate the wall, the threads or the device on which they are attached are pulled back to open the artery. Threading continues as shown in FIG. 13B through the inner wall of the coronary artery.
The embodiments illustrated and described above are provided merely as examples of certain preferred embodiments of the present invention. Other changes and, modifications can be made from the embodiments presented herein by those skilled in the art without departure from the spirit and scope of the invention, as defined by the appended claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3971363||May 5, 1975||Jul 27, 1976||Nasa||Myocardium wall thickness transducer and measuring method|
|US4503568||Nov 25, 1981||Mar 12, 1985||New England Deaconess Hospital||Small diameter vascular bypass and method|
|US4733665||Nov 7, 1985||Mar 29, 1988||Expandable Grafts Partnership||Expandable intraluminal graft, and method and apparatus for implanting an expandable intraluminal graft|
|US4769029||Jun 19, 1987||Sep 6, 1988||Patel Jayendrakumar I||Prosthetic graft for arterial system repair|
|US4995857||Apr 7, 1989||Feb 26, 1991||Arnold John R||Left ventricular assist device and method for temporary and permanent procedures|
|US5035702||Jun 18, 1990||Jul 30, 1991||Taheri Syde A||Method and apparatus for providing an anastomosis|
|US5135467||Dec 7, 1989||Aug 4, 1992||Medtronic, Inc.||Implantable system and method for coronary perfusions assistance|
|US5190058||May 22, 1991||Mar 2, 1993||Medtronic, Inc.||Method of using a temporary stent catheter|
|US5226889||Jul 24, 1991||Jul 13, 1993||Imad Sheiban||Double balloon catheter for stent implantation|
|US5258008||Jul 29, 1992||Nov 2, 1993||Wilk Peter J||Surgical stapling device and associated method|
|US5287861||Oct 30, 1992||Feb 22, 1994||Wilk Peter J||Coronary artery by-pass method and associated catheter|
|US5292309||Jan 22, 1993||Mar 8, 1994||Schneider (Usa) Inc.||Surgical depth measuring instrument and method|
|US5330486||Nov 25, 1992||Jul 19, 1994||Wilk Peter J||Laparoscopic or endoscopic anastomosis technique and associated instruments|
|US5344426||Apr 15, 1993||Sep 6, 1994||Advanced Cardiovascular Systems, Inc.||Method and system for stent delivery|
|US5385541||Apr 24, 1992||Jan 31, 1995||Loma Linda University Medical Center||Cerebrospinal fluid shunt capable of minimal invasive revision|
|US5409019||Nov 3, 1993||Apr 25, 1995||Wilk; Peter J.||Coronary artery by-pass method|
|US5423744||Oct 25, 1993||Jun 13, 1995||Gencheff; Nelson||Catheter system for the deployment of biological material|
|US5423851||Mar 6, 1994||Jun 13, 1995||Samuels; Shaun L. W.||Method and apparatus for affixing an endoluminal device to the walls of tubular structures within the body|
|US5429144||Apr 5, 1994||Jul 4, 1995||Wilk; Peter J.||Coronary artery by-pass method|
|US5443497||Nov 22, 1993||Aug 22, 1995||The Johns Hopkins University||Percutaneous prosthetic by-pass graft and method of use|
|US5456694||May 13, 1994||Oct 10, 1995||Stentco, Inc.||Device for delivering and deploying intraluminal devices|
|US5456712||Oct 18, 1993||Oct 10, 1995||Maginot; Thomas J.||Graft and stent assembly|
|US5456714||Jul 3, 1992||Oct 10, 1995||Owen; Earl R.||Tubular surgical implant having a locking ring and flange|
|US5470320||Apr 10, 1992||Nov 28, 1995||Tiefenbrun; Jonathan||Method and related device for obtaining access to a hollow organ|
|US5527337||Feb 22, 1994||Jun 18, 1996||Duke University||Bioabsorbable stent and method of making the same|
|US5578075||Jun 1, 1995||Nov 26, 1996||Michael Peck Dayton||Minimally invasive bioactivated endoprosthesis for vessel repair|
|US5593434||Jun 7, 1995||Jan 14, 1997||Advanced Cardiovascular Systems, Inc.||Stent capable of attachment within a body lumen|
|US5609626||Jun 22, 1994||Mar 11, 1997||Baxter International Inc.||Stent devices and support/restrictor assemblies for use in conjunction with prosthetic vascular grafts|
|US5611778||May 12, 1993||Mar 18, 1997||Vygon||Surgical instrument for performing epidural anesthesia|
|US5618299||Aug 8, 1995||Apr 8, 1997||Advanced Cardiovascular Systems, Inc.||Ratcheting stent|
|US5643278||Apr 6, 1995||Jul 1, 1997||Leocor, Inc.||Stent delivery system|
|US5655548||Sep 16, 1996||Aug 12, 1997||Circulation, Inc.||Method for treatment of ischemic heart disease by providing transvenous myocardial perfusion|
|US5662124||Jun 19, 1996||Sep 2, 1997||Wilk Patent Development Corp.||Coronary artery by-pass method|
|US5676670||Jun 14, 1996||Oct 14, 1997||Beth Israel Deaconess Medical Center||Catheter apparatus and method for creating a vascular bypass in-vivo|
|US5733267||May 29, 1996||Mar 31, 1998||Scimed Life Systems, Inc.||Pull back stent delivery system|
|US5755682||Aug 13, 1996||May 26, 1998||Heartstent Corporation||Method and apparatus for performing coronary artery bypass surgery|
|US5758663||Apr 5, 1996||Jun 2, 1998||Wilk; Peter J.||Coronary artery by-pass method|
|US5787933||Feb 17, 1995||Aug 4, 1998||Abb Reaktor Gmbh||Method of obtaining a leakproof connection between a tube and a sleeve|
|US5797920||Aug 23, 1996||Aug 25, 1998||Beth Israel Deaconess Medical Center||Catheter apparatus and method using a shape-memory alloy cuff for creating a bypass graft in-vivo|
|US5810836||Nov 7, 1996||Sep 22, 1998||Myocardial Stents, Inc.||Device and method for trans myocardial revascularization (TMR)|
|US5810871||Apr 29, 1997||Sep 22, 1998||Medtronic, Inc.||Stent delivery system|
|US5824038||Dec 26, 1995||Oct 20, 1998||Wall; W. Henry||Angioplasty stent|
|US5824071||Feb 12, 1997||Oct 20, 1998||Circulation, Inc.||Apparatus for treatment of ischemic heart disease by providing transvenous myocardial perfusion|
|US5830222||Oct 11, 1996||Nov 3, 1998||Transvascular, Inc.||Device, system and method for intersititial transvascular intervention|
|US5843163||Jun 6, 1996||Dec 1, 1998||Wall; William H.||Expandable stent having radioactive treatment means|
|US5851232||Mar 15, 1997||Dec 22, 1998||Lois; William A.||Venous stent|
|US5855597||May 7, 1997||Jan 5, 1999||Iowa-India Investments Co. Limited||Stent valve and stent graft for percutaneous surgery|
|US5865723||Dec 29, 1995||Feb 2, 1999||Ramus Medical Technologies||Method and apparatus for forming vascular prostheses|
|US5876419||Oct 15, 1997||Mar 2, 1999||Navius Corporation||Stent and method for making a stent|
|US5878751||Oct 20, 1997||Mar 9, 1999||Myocardial Stents, Inc.||Method for trans myocardial revascularization (TMR)|
|US5893848||Oct 24, 1996||Apr 13, 1999||Plc Medical Systems, Inc.||Gauging system for monitoring channel depth in percutaneous endocardial revascularization|
|US5908028||Jul 11, 1997||Jun 1, 1999||Wilk Patent Development Corp.||Coronary artery by-pass method|
|US5908029||Aug 15, 1997||Jun 1, 1999||Heartstent Corporation||Coronary artery bypass with reverse flow|
|US5935119||Aug 6, 1997||Aug 10, 1999||United States Surgical Corporation||Perfusion structure|
|US5935161||Apr 11, 1997||Aug 10, 1999||C. R. Bard, Inc.||Non-migrating vascular prosthesis and minimally invasive placement system therefor|
|US5935162||Mar 16, 1998||Aug 10, 1999||Medtronic, Inc.||Wire-tubular hybrid stent|
|US5944019||Jun 25, 1997||Aug 31, 1999||Heartstent Corporation||Closed chest coronary bypass|
|US5961548||Nov 18, 1997||Oct 5, 1999||Shmulewitz; Ascher||Bifurcated two-part graft and methods of implantation|
|US5968093||Oct 28, 1997||Oct 19, 1999||Biotronik Mess-And Therapiegerate Gmbh & Co.||Stent|
|US5971993||Dec 16, 1998||Oct 26, 1999||Myocardial Stents, Inc.||System for delivery of a trans myocardial device to a heart wall|
|US5976153||Mar 18, 1998||Nov 2, 1999||Fischell; Robert E.||Stent delivery catheter system|
|US5976155||Mar 5, 1999||Nov 2, 1999||Advanced Cardiovascular Systems, Inc.||System for removably securing a stent on a catheter assembly and method of use|
|US5976159||Feb 8, 1996||Nov 2, 1999||Heartport, Inc.||Surgical clips and methods for tissue approximation|
|US5976169||Nov 30, 1998||Nov 2, 1999||Cardiovasc, Inc.||Stent with silver coating and method|
|US5976178||Nov 7, 1996||Nov 2, 1999||Vascular Science Inc.||Medical grafting methods|
|US5976181||Sep 22, 1997||Nov 2, 1999||Ave Connaught||Balloon mounted stent and method therefor|
|US5976182||Jun 15, 1998||Nov 2, 1999||Advanced Cardiovascular Systems, Inc.||Balloon-expandable, crush-resistant locking stent and method of loading the same|
|US5976192||Dec 10, 1996||Nov 2, 1999||Baxter International Inc.||Method of forming an externally supported tape reinforced vascular graft|
|US5976650||Jun 7, 1995||Nov 2, 1999||W. L. Gore & Associates, Inc.||Method of securing a thin-wall intraluminal graft|
|US5979455||May 5, 1998||Nov 9, 1999||Maginot Vascular Systems||Method for directing blood flow in the body of a patient with a graft and stent assembly|
|US5980530||Aug 23, 1996||Nov 9, 1999||Scimed Life Systems Inc||Stent delivery system|
|US5980533||Jun 9, 1998||Nov 9, 1999||Scimed Life Systems, Inc.||Stent delivery system|
|US5980548||Oct 29, 1997||Nov 9, 1999||Kensey Nash Corporation||Transmyocardial revascularization system|
|US5980551||Feb 7, 1997||Nov 9, 1999||Endovasc Ltd., Inc.||Composition and method for making a biodegradable drug delivery stent|
|US5980552||Dec 4, 1996||Nov 9, 1999||Medinol Ltd.||Articulated stent|
|US5980553||Apr 7, 1997||Nov 9, 1999||Cordis Corporation||Axially flexible stent|
|US5980566||Apr 11, 1998||Nov 9, 1999||Alt; Eckhard||Vascular and endoluminal stents with iridium oxide coating|
|US5984955||Sep 11, 1997||Nov 16, 1999||Wisselink; Willem||System and method for endoluminal grafting of bifurcated or branched vessels|
|US5984956||Oct 6, 1997||Nov 16, 1999||Heartstent Corporation||Transmyocardial implant|
|US5984963||Apr 23, 1996||Nov 16, 1999||Medtronic Ave, Inc.||Endovascular stents|
|US5984965||Aug 28, 1997||Nov 16, 1999||Urosurge, Inc.||Anti-reflux reinforced stent|
|US5989207||Nov 3, 1997||Nov 23, 1999||Hughes; Boyd R.||Double swirl stent|
|US5989263||Mar 11, 1998||Nov 23, 1999||Arteria Medical Science L.L.C.||Hydraulically actuated dilatation mechanism for vessel dilatation and vascular prosthesis delivery and methods of use|
|US5989287||May 6, 1998||Nov 23, 1999||Av Healing Llc||Vascular graft assemblies and methods for implanting same|
|US5993481||Apr 29, 1997||Nov 30, 1999||Intervascular, Inc.||Modular bifurcated intraluminal grafts and methods for delivering and assembling same|
|US5993482||Jun 30, 1997||Nov 30, 1999||Endovascular Technologies, Inc.||Flat wire stent|
|US5997563||Sep 28, 1998||Dec 7, 1999||Medtronic, Inc.||Implantable stent having variable diameter|
|US5997573||Jul 29, 1997||Dec 7, 1999||Baxter International, Inc.||Stent devices and support/restrictor assemblies for use in conjunction with prosthetic vascular grafts|
|US6001123||May 28, 1996||Dec 14, 1999||Gore Enterprise Holdings Inc.||Folding self-expandable intravascular stent-graft|
|US6004261||Feb 13, 1997||Dec 21, 1999||C. R. Bard, Inc.||Formed-in-place endovascular stent and delivery system|
|US6004347||Dec 4, 1996||Dec 21, 1999||C. R. Bard, Inc.||Non-migrating vascular prosthesis and minimally invasive placement system therefor|
|US6004348||Apr 27, 1998||Dec 21, 1999||Impra, Inc.||Endoluminal encapsulated stent and methods of manufacture and endoluminal delivery|
|US6007543||Aug 23, 1996||Dec 28, 1999||Scimed Life Systems, Inc.||Stent delivery system with stent securement means|
|US6007575||Jun 6, 1997||Dec 28, 1999||Samuels; Shaun Laurence Wilkie||Inflatable intraluminal stent and method for affixing same within the human body|
|US6007576||Feb 6, 1998||Dec 28, 1999||Mcclellan; Scott B.||End to side anastomic implant|
|US6010530||Feb 18, 1998||Jan 4, 2000||Boston Scientific Technology, Inc.||Self-expanding endoluminal prosthesis|
|US6017365||May 20, 1998||Jan 25, 2000||Jomed Implantate Gmbh||Coronary stent|
|US6029672||Apr 20, 1998||Feb 29, 2000||Heartstent Corporation||Transmyocardial implant procedure and tools|
|US6036697||Jul 9, 1998||Mar 14, 2000||Scimed Life Systems, Inc.||Balloon catheter with balloon inflation at distal end of balloon|
|US6039721||Dec 3, 1997||Mar 21, 2000||Cordis Corporation||Method and catheter system for delivering medication with an everting balloon catheter|
|US6042581||Nov 8, 1996||Mar 28, 2000||Thomas J. Fogarty||Transvascular TMR device and method|
|US6045565||Nov 2, 1998||Apr 4, 2000||Scimed Life Systems, Inc.||Percutaneous myocardial revascularization growth factor mediums and method|
|US6053911||Mar 18, 1997||Apr 25, 2000||Thomas J. Fogarty||Transvascular TMR device and method|
|US6053924||Apr 29, 1999||Apr 25, 2000||Hussein; Hany||Device and method for trans myocardial revascularization|
|US6053942||Aug 18, 1998||Apr 25, 2000||Heartstent Corporation||Transmyocardial implant with coronary stent|
|US6067988||Dec 26, 1996||May 30, 2000||Eclipse Surgical Technologies, Inc.||Method for creation of drug delivery and/or stimulation pockets in myocardium|
|US6068638||Oct 27, 1998||May 30, 2000||Transvascular, Inc.||Device, system and method for interstitial transvascular intervention|
|US6071292||Jun 28, 1997||Jun 6, 2000||Transvascular, Inc.||Transluminal methods and devices for closing, forming attachments to, and/or forming anastomotic junctions in, luminal anatomical structures|
|US6076529||Apr 20, 1998||Jun 20, 2000||Heartstent Corporation||Transmyocardial implant with inserted vessel|
|US6080163||Jun 15, 1998||Jun 27, 2000||Myocardial Stents, Inc.||Device and method for trans myocardial revascularization (TMR)|
|US6093166||Apr 3, 1998||Jul 25, 2000||Heartstent, Llc||Coronary bypass implant|
|US6095997||Mar 4, 1998||Aug 1, 2000||Corvascular, Inc.||Intraluminal shunt and methods of use|
|US6102941||Feb 8, 1999||Aug 15, 2000||Heartstent Corporation||Transmyocardial implant with coronary ingrowth|
|US6106538||Apr 5, 1999||Aug 22, 2000||Shiber; Samuel||Method for forming an internal coronary bypass|
|US6110201||Feb 18, 1999||Aug 29, 2000||Venpro||Bifurcated biological pulmonary valved conduit|
|US6113630||Aug 13, 1999||Sep 5, 2000||Heartstent Corporation||Transmyocardial implant with minimized coronary insertion|
|US6113823||Jun 9, 1998||Sep 5, 2000||Heartstent Corporation||Pyrolytic carbon transmyocardial implant|
|US6117165||Jun 10, 1998||Sep 12, 2000||Becker; Gary J.||Expandable intraluminal endoprosthesis|
|US6123682||Apr 3, 1998||Sep 26, 2000||Heartstent Corporation||Closed chest coronary bypass|
|US6126649||Jun 10, 1999||Oct 3, 2000||Transvascular, Inc.||Steerable catheter with external guidewire as catheter tip deflector|
|US6139541||Sep 2, 1998||Oct 31, 2000||Heartstent Corporation||Guide for transmyocardial implant|
|US6152141||Dec 8, 1997||Nov 28, 2000||Heartport, Inc.||Method for delivery of therapeutic agents to the heart|
|US6159225||Oct 27, 1998||Dec 12, 2000||Transvascular, Inc.||Device for interstitial transvascular intervention and revascularization|
|US6162245||Jan 5, 1999||Dec 19, 2000||Iowa-India Investments Company Limited||Stent valve and stent graft|
|US6165188||Mar 23, 1999||Dec 26, 2000||Angiotrax, Inc.||Apparatus for percutaneously performing myocardial revascularization having controlled cutting depth and methods of use|
|US6171251||Jul 14, 1998||Jan 9, 2001||Eclipse Surgical Technologies, Inc.||Method and apparatus for optimizing direct vessel implants for myocardial revascularization|
|US6171303||Jul 2, 1998||Jan 9, 2001||Biosense, Inc.||Methods and apparatus for myocardial revascularization|
|US6182668||May 13, 1999||Feb 6, 2001||Heartstent Corporation||Transmyocardial implant with induced tissue flap|
|US6186972||Dec 9, 1998||Feb 13, 2001||James A. Nelson||Methods and apparatus for treating ischemic heart disease by providing transvenous myocardial perfusion|
|US6190353||Oct 11, 1996||Feb 20, 2001||Transvascular, Inc.||Methods and apparatus for bypassing arterial obstructions and/or performing other transvascular procedures|
|US6193726||Jan 15, 1999||Feb 27, 2001||Heartstent Corporation||Insertion tool for transmyocardial implant|
|US6196230||Sep 10, 1998||Mar 6, 2001||Percardia, Inc.||Stent delivery system and method of use|
|US6197050||Sep 14, 1998||Mar 6, 2001||Heartstent Corporation||Transmyocardial implant with compliance collar|
|US6200310||Sep 15, 1997||Mar 13, 2001||Biosense, Inc.||Monitoring of myocardial revascularization|
|US6203556||Aug 5, 1999||Mar 20, 2001||Kensey Nash Corporation||Transmyocardial revascularization system and method of use|
|US6214041||Jan 20, 1998||Apr 10, 2001||Heartstent Corporation||Transmyocardial implant with septal perfusion|
|US6223752||Oct 27, 1998||May 1, 2001||Heartstent Corporation||Transmyocardial implant procedure|
|US6231587||Mar 11, 1999||May 15, 2001||Transvascular, Inc.||Devices for connecting anatomical conduits such as vascular structures|
|US6237607||Nov 4, 1999||May 29, 2001||Heartstent Corporation||Transmyocardial implant procedure|
|US6238406||Mar 1, 2000||May 29, 2001||Scimed Life Systems, Inc.||Percutaneous myocardial revascularization growth factor mediums and method|
|US6248112||Sep 30, 1998||Jun 19, 2001||C. R. Bard, Inc.||Implant delivery system|
|US6250305||Jan 20, 1998||Jun 26, 2001||Heartstent Corporation||Method for using a flexible transmyocardial implant|
|US6253768||Aug 4, 1999||Jul 3, 2001||Percardia, Inc.||Vascular graft bypass|
|US6254564||Aug 4, 1999||Jul 3, 2001||Percardia, Inc.||Left ventricular conduit with blood vessel graft|
|US6258119||Apr 15, 1999||Jul 10, 2001||Myocardial Stents, Inc.||Implant device for trans myocardial revascularization|
|US6261304||Aug 4, 1999||Jul 17, 2001||Percardia, Inc.||Delivery methods for left ventricular conduit|
|US6283951||Mar 25, 1998||Sep 4, 2001||Transvascular, Inc.||Systems and methods for delivering drugs to selected locations within the body|
|US6283983||Aug 10, 1998||Sep 4, 2001||Transvascular, Inc.||Percutaneous in-situ coronary bypass method and apparatus|
|US6287317||Apr 5, 2000||Sep 11, 2001||Transvascular, Inc.||Transluminal methods and devices for closing, forming attachments to, and/or forming anastomotic junctions in, luminal anatomical structures|
|US6290719||Jul 14, 1998||Sep 18, 2001||Sorin Biomedica Cardio S.P.A.||Element for anchoring an implant device in place|
|US6290728||Aug 4, 1999||Sep 18, 2001||Percardia, Inc.||Designs for left ventricular conduit|
|US6302875||Apr 11, 1997||Oct 16, 2001||Transvascular, Inc.||Catheters and related devices for forming passageways between blood vessels or other anatomical structures|
|US6302892||Aug 4, 1999||Oct 16, 2001||Percardia, Inc.||Blood flow conduit delivery system and method of use|
|US6306125||Jun 21, 1999||Oct 23, 2001||Neovasys, Inc.||Angiogenic implant delivery system and method|
|US6330884||Jun 2, 1998||Dec 18, 2001||Transvascular, Inc.||Deformable scaffolding multicellular stent|
|US6331178||Dec 7, 1999||Dec 18, 2001||Cardiodyne, Inc.||User actuated laser energy device and procedure for forming a channel within tissue|
|US6350248||Apr 13, 2000||Feb 26, 2002||Heartstent Corporation||Expandable myocardial implant|
|US6363939||May 18, 1999||Apr 2, 2002||Wilk Patent Development Corp.||Coronary artery by-pass method|
|US6375615||Mar 31, 1999||Apr 23, 2002||Transvascular, Inc.||Tissue penetrating catheters having integral imaging transducers and their methods of use|
|US6379319||Oct 27, 1998||Apr 30, 2002||Transvascular, Inc.||Systems and methods for directing and snaring guidewires|
|US6387119||Mar 2, 2001||May 14, 2002||Percardia, Inc.||Delivery methods for left ventricular conduit|
|US20010004683||Jan 31, 2001||Jun 21, 2001||Gambale Richard A.||Vascular inducing implants|
|US20010004690||Jan 31, 2001||Jun 21, 2001||Gambale Richard A.||Vascular inducing implants|
|US20010004699||Feb 1, 2001||Jun 21, 2001||Ventrica, Inc.||Methods and devices for forming vascular anastomoses|
|US20010008969||Feb 1, 2001||Jul 19, 2001||Kensey Nash Corporation||Transmyocardial revascularization system and method of use|
|US20010025643||Apr 11, 2001||Oct 4, 2001||Ventrica, Inc.||Methods and devices providing transmyocardial blood flow to the arterial vascular system of the heart|
|US20010027287||Feb 27, 2001||Oct 4, 2001||Trans Vascular, Inc.||Apparatus for providing coronary retroperfusion and/or left ventricular assist and methods of use|
|US20010034547||Mar 2, 2001||Oct 25, 2001||Percardia, Inc.||Delivery methods for left ventricular conduit|
|US20010037117||Jun 18, 2001||Nov 1, 2001||Gambale Richard A.||Implant delivery system|
|US20010039426||Jul 18, 2001||Nov 8, 2001||Trans Vascular, Inc.||Transluminal methods and devices for closing, forming attachments to, and/or forming anastomotic junctions in, luminal anatomical structures|
|US20010039445||Jun 27, 2001||Nov 8, 2001||Percardia, Inc.||Stent delivery system and method of use|
|US20010041902||Sep 10, 1999||Nov 15, 2001||Michael J. Lynch||Anastomotic methods and devices for placing a target vessel in fluid communication with a source of blood|
|US20010047165||Jul 24, 2001||Nov 29, 2001||Transvascular, Inc.||Catheters and related devices for forming passageways between blood vessels or other anatomical structures|
|US20010053932||Apr 10, 2001||Dec 20, 2001||Percardia, Inc.,||Designs for left ventricular conduit|
|US20020002349||Apr 3, 2001||Jan 3, 2002||Transvascular, Inc.||Systems and methods for delivering drugs to selected locations within the body|
|US20020004662||Apr 10, 2001||Jan 10, 2002||Percardia, Inc.||Blood flow conduit delivery system and method of use|
|US20020032478||Jul 31, 2001||Mar 14, 2002||Percardia, Inc.||Myocardial stents and related methods of providing direct blood flow from a heart chamber to a coronary vessel|
|US20020045928||May 1, 2001||Apr 18, 2002||Percardia, Inc.||Methods and devices for delivering a ventricular stent|
|US20020058897||Sep 20, 2001||May 16, 2002||Percardia, Inc.||Designs for left ventricular conduit|
|EP0732088B1||Mar 14, 1996||Apr 12, 2000||Advanced Cardiovascular Systems, Inc.||Expandable stent forming projecting barbs|
|EP0797957A1||Mar 27, 1997||Oct 1, 1997||Eclipse Surgical Technologies, Inc.||Depth stop apparatus for laserassisted transmyocardial revascularization and other surgical applications|
|EP0824903B1||Aug 15, 1997||Jan 14, 2004||Medtronic Ave, Inc.||A profiled stent and method of manufacture|
|EP0876803B1||May 6, 1998||Jul 19, 2006||C.R. Bard, Inc.||TMR stent and delivery system|
|EP0903123A1||Sep 21, 1998||Mar 24, 1999||Cordis Corporation||Axially flexible stent|
|EP0904745A3||Sep 11, 1998||Jan 12, 2000||Medtronic Ave, Inc.||Endolumenal prosthesis and method of use in bifurcation regions of body lumens|
|EP0955017B1||Apr 22, 1999||Jun 7, 2006||Abbott Laboratories Vascular Enterprises Limited||Radially expandable stent|
|EP0955019B1||Apr 30, 1999||Jan 26, 2005||Vascutek Limited||Prosthetic tubular aortic conduit and method for manufacturing the same|
|EP0962194A3||May 28, 1999||Apr 19, 2000||Bard Connaught||Expandable stent having articulated connecting rods|
|EP1020166A1||Jan 12, 1999||Jul 19, 2000||Orbus Medical Technologies, Inc.||Expandable intraluminal endoprosthesis|
|EP1027870B1||Jan 12, 2000||Mar 30, 2005||Orbus Medical Technologies, Inc.||Expandable intraluminal endoprosthesis|
|EP1097676A1||Nov 4, 1999||May 9, 2001||Transvascular, Inc.||Device for forming holes in tissue|
|EP1166721A3||Oct 11, 1996||Dec 3, 2003||Transvascular, Inc.||Apparatus for transvascular procedures|
|GB2316322B||Title not available|
|1||AJR, "Expandable Inrahepatic Portacoval Shunt Stents in Dogs with Chronic Portal Hypertension," J. Palmaz, et al., pp. 1251-1256, Dec., 1988.|
|2||AJR, "Expandable Intrahepatic Portacaval Shunt Stents: Early Experience in the Dog," J. Palmaz, et al., pp. 821-825.|
|3||American Heart Journal, "Effects of Laser Irradiation Delivered by Flexible Fiberoptic System on the Left Ventricular Internal Myocardium," G. Lee, M.D., et al., pp. 587-590, vol. 106, No. 3, Sep. 1983.|
|4||American Journal of Physiology, "Transmural Myocardial Perfusion During Restricted Coronary Inflow in the Awake Dog," R. Bache, et al., pp. H645-651, vol. 232, No. 6 ISSN-0002-9513.|
|5||American Medical Association Publication; "Myocardial Revascularization Experiments Using the Epicardium," B. G. Lary, M.D., et al.; Archives of Surgery, pp. 69-72, vol. 98, No. 1, Jan. 1969.|
|6||Surgical Forum, "Proceedings of the 24th Annual Sessions of the Forum on Fundamental Surgical Problems," 54th Clinical Congress of the American College of Surgeons, Chicago, Illinois, Oct., 1968, pp. 156-159, American College of Surgeons, Chicago, Illinois.|
|7||Texas Heart Institute Journal, "Transmyocardial Laser Revascularization," D. Cooley, M.D., et al., pp. 220-224, vol. 21, No. 3, 1994.|
|8||The Annals of Thoracic Surgery, "Myocardial Canalization," A. Khazei, M.D., et al., vol. 6, No. 2, Aug. 1968.|
|9||The Journal of Thoracic and Cardiovascular Surgery, "Experimental Evaluation of Myocardial Tunnelization as a Method of Myocardial Revascularization," I. Anabtawi, M.D., et al., pp. 638-646., Nov. 1969.|
|10||The Journal of Thoracic and Cardiovascular Surgery, "Experimental Evalution of Direct Transventicular Revascularization," L. Kuzela, M.D., et al., pp. 770-773, vol. 57, Jan.-Jun. 1969, The C.V. Mosby Co., St. Louis, MO.|
|11||The Journal of Thoracic and Cardiovascular Surgery, "Myocardial Revascularization by a New Method of Carrying Blood Directly from the Left Ventricular Cavity into the Coronary Circulation," C Massimo, M.D., et al., pp. 257-264, Aug. 1957.|
|12||The Journal of Thoracic and Cardiovascular Surgery, "The Possibility of Myocardial Revascularization by Creation of a Left Ventriculocoronary Artery Fistula," I. Munro, M.D., et al., pp. 25-32., vol. 58, 1969.|
|13||Tweden et al., "Ventriculocoronary Artery Bypass (VCAB), a Novel Approach to Myocardial Revascularization" Feb. 2000.|
|14||US 6,331,185, 12/2001, Gambale et al. (withdrawn)|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7294115 *||Mar 24, 2000||Nov 13, 2007||Percardia, Inc.||Methods of providing direct blood flow between a heart chamber and a coronary vessel|
|US7704222||Aug 30, 2004||Apr 27, 2010||Jenavalve Technology, Inc.||Methods and conduits for flowing blood from a heart chamber to a blood vessel|
|US7736327||May 9, 2008||Jun 15, 2010||Jenavalve Technology, Inc.||Methods and conduits for flowing blood from a heart chamber to a blood vessel|
|US7740627||Jan 6, 2006||Jun 22, 2010||Medtronic Cryocath Lp||Surgical method and apparatus for treating atrial fibrillation|
|US7846123 *||Apr 24, 2007||Dec 7, 2010||Emory University||Conduit device and system for implanting a conduit device in a tissue wall|
|US7918854||Apr 13, 2007||Apr 5, 2011||Howmedica Osteonics Corp.||Non-destructive tissue repair and regeneration|
|US7988716||Apr 25, 2005||Aug 2, 2011||Howmedica Osteonics Corp.||Stent for a vascular meniscal repair and regeneration|
|US8216174||Apr 30, 2010||Jul 10, 2012||Jenavalve Technology, Inc.||Methods and conduits for flowing blood from a heart chamber to a blood vessel|
|US8403943||Aug 6, 2007||Mar 26, 2013||Howmedica Osteonics Corp.||Insertion system for implanting a medical device and surgical methods|
|US8430836||Oct 11, 2010||Apr 30, 2013||Emory University||Conduit device and system for implanting a conduit device in a tissue wall|
|US8597226||Jun 12, 2012||Dec 3, 2013||Jenavalve Technology, Inc.||Methods and conduits for flowing blood from a heart chamber to a blood vessel|
|US8858489||Mar 18, 2013||Oct 14, 2014||Emory University||Conduit device and system for implanting a conduit device in a tissue wall|
|US8926602||Jan 28, 2010||Jan 6, 2015||Medtronic Cryocath Lp||Triple balloon catheter|
|US9061115 *||Dec 11, 2012||Jun 23, 2015||Medtronic Vascular, Inc.||Methods and apparatus for providing an arteriovenous fistula|
|US9138228||Oct 14, 2005||Sep 22, 2015||Emory University||Vascular conduit device and system for implanting|
|US20030212413 *||May 1, 2003||Nov 13, 2003||Percardia, Inc.||Blood flow conduit delivery system and method of use|
|US20040147869 *||Oct 9, 2003||Jul 29, 2004||Percardia, Inc.||Left ventricular conduits to coronary arteries and methods for coronary bypass|
|US20040254518 *||Mar 26, 2004||Dec 16, 2004||Sun Lee||Device to promote blood flow into the myocardium|
|US20050101903 *||Nov 9, 2004||May 12, 2005||Percardia, Inc.||Interventional diagnostic catheter and a method for using a catheter to access artificial cardiac shunts|
|US20060112956 *||Oct 24, 2003||Jun 1, 2006||Michel Serpelloni||Use of branched malto-dextrins as granulation binders|
|US20110184504 *||Jan 22, 2010||Jul 28, 2011||Medtronic Vascular, Inc.||Methods and Apparatus for Providing an Arteriovenous Fistula|
|US20130116614 *||May 9, 2013||Medtronic Vascular, Inc.||Methods and Apparatus for Providing an Arteriovenous Fistula|
|International Classification||A61B17/00, A61F11/00, A61F2/02, A61F2/94, A61F2/82|
|Cooperative Classification||A61F2/82, A61F2/94, A61F2/2493, A61F2230/0091, A61F2220/0016, A61B2017/00252|
|European Classification||A61F2/82, A61F2/24Y, A61F2/94|
|Jan 6, 2004||CC||Certificate of correction|
|Oct 3, 2006||AS||Assignment|
Owner name: HORIZON TECHNOLOGY FUNDING COMPANY LLC, CONNECTICU
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PERCARDIA, INC.;REEL/FRAME:018375/0912
Effective date: 20060701
|May 16, 2007||REMI||Maintenance fee reminder mailed|
|Oct 18, 2007||SULP||Surcharge for late payment|
|Oct 18, 2007||FPAY||Fee payment|
Year of fee payment: 4
|Jun 6, 2011||REMI||Maintenance fee reminder mailed|
|Oct 28, 2011||LAPS||Lapse for failure to pay maintenance fees|
|Dec 20, 2011||FP||Expired due to failure to pay maintenance fee|
Effective date: 20111028